Machine for manufacturing pneumatic tires.



A. 1111111111111. MACHINE FOR MANUFAGTURING PNEUMATIC TIRES.

. APPLICATION FILED 0071.3, 1910. 1,009,765. 111311191110128, 1911.

2 SHEETS-s111121: 1.

. A. MATHERN. MACHINE FOR MANUFAGTUMNQPNEUMATIG TIRES..

APPLIOATIONIILED 00T. 3, 1910. 1,009,765. Patented Nov. 2a, 19.11.

2 SHEETS-SHEET 2f @Msi/Aims@ ALPHONSE KATHERN, O F BERLIN, GERMANY.

MACHINE FOB MANUFACTURING PNEU'MATIC TIRES.

Spealcation o! Letters Patent.

Patented Nov. 28, 1911.

'Application med come: s, iaio. semi no. saam.

To all 'whonmt may concern.'

Be it known that I, ALPHoNsn Marsalis, engineer, a citizen of the FrenchRepublic, residing at'19 Glogauerstrasse, Ber n, S. O. 3G, Kingdom ofPrussia, Germany, have invented certain new and useful Im rovements inMachines for Manufacturing neu- 4matic Tires, of which the following isa specification.

The present invention 'relates to a machine for making pneumatic tiresfor automobiles 'and consists of a device allowing of suppressin thefolds formed in tlie canvas when the atter is laid around the core, atthev same time insuring a reliable sticking of the said canvas to thecore and of the several superimposed layers of canvas to each other.

A pneumatic tire for automobile consists essentiall of a carcasscomposed of several layers o canvas covered with caoutchouc and stuck oneach other. These layers of fabric are in the course of manufacture laidon a ys ecial foi-mer' termed the jcore-ring. Dn botii sides 'folds willbe formed in great number and it will be necessary to first remove thesepleats before the layers of canvas can be stuck together. Heretfore thisdifficulty was met by pulling the stri s of canvas in such a. manner' asto stretc the middle and thereby admit of suppressin the folds formed atthe sides.' This meth is very bad, as the fabric is thereby deformed atthe very part which should maintain its greatest strength.

Mv machine dispenses with the stretching oi' the canvas as the 4Foldsformed at the Pics arc removed by imvms of a special-deiice, so that thesevera-ii layers ot canvas ina he stuck to ether` Y "c'prcserving theirful strength. t is necessary that the sticking of the several la'veraIof canvas to the core-ring and each ot er .'-spectively to be effectedin an automatic manner, so that the opera tor need .not touch thecanvas, whereby thc latter might he soih i 'md other faults in the`lsticking together cannot occur and render the pneiiinathl lire useless.When ythe smoothing outnf the folds und sticking together are cfi'cctcdin un automatic maiinvr, it will be .possible to place in one continuousoperation several layers of canvas on the rover-ring without it beingnecessary to `stop tim machine.'

ln the accompnn'ing fil-swings: Figure l is a front vieu.' r themachine; Fig. 2 is .i side view with part-section along the line C-D inFig. 1; Fi 3 is a plan view. with art-section along t ie line A-.B inFig. 1; Iigs. 4 and 5 are sectional plan views of the device forremoving the pleats; Fig. 6

is a-dia am, showing the travels of the ends of the evers; Fig. 7 is ato view showing the arrangement of the ro lers serving to stick thecanvas on thetop of the core.

In the following I shall now describe my machine.

' The core-ring 1, whichhas the exact shape of the interior of the tireand which is intended to receive t-he several layers of canvas, isrigidly fitted to the mamshaft 2 of the machine, so as to revolve withthe same in the direction of the arrow in Fig. 1.

The canvas band covered with caoutchouc 3 is wound on a drum 4 which isfitted on a square shaft 5. This canvas strip is fiat and of asuilicient length so as to go twice or more often around thecore-ring 1. For placin the canvas 3 on the core-ring 1 the end o thecanvas 3 is applied to the core ring which has been previously coveredwith a caoutchouc cement; the machine is then started and the canvaswill be unwound from the drum 4 and be wrap ed around the outer part'ofthe core-ring, arge folds being formed at the sides as shown in Fig. 1.

In consequence of the rotation of the corerin 1 the canvas passesbeneath the roller device 7 (Figs. 1 and 7), which consists of a niunberof independent rollers each pressed under action o a separate springagainst the top of the core-ring. The rollers of this device 7 arearranged in such a manner, that each presses on a diii'erent part of thebop of the core-ring without any air voids being left.

As the core-ring `spring 1 continues its .rotation the canvas 8 reachesthe device serving. to flatten the folds Figs. 1, 2, 4 and 5).

T is device is ari-ang so as to compress the canvas initself, therebyreducing the length of the canvus-band at the sides; it is thereforeobvious, that such oie-ation will cause the folds to disappear.hisdevice act'. on the sides of the canvas band only. Itconsists of twomain arts 9 in which reciprocate parts 8 actuat by levers 10. Theselevers 10 are pivotcd to parts 9 and rcceive'thcir oscillating motionfrom a cam shaft 11, which is rotated by means of a pulley 12, and fromsprings 24 which tend to force the levers 10 toward the cam shaft 11.The parts 8 will strike against the short ends of parts 9'and at thesame time sei ze 'the canvas, which is thus pressed 'between 8 and 9..Before part -8 o'omes ineen-- tact *withA part 9, the small part 14will Tbe projecting from'thevmiddle ofpart 9,-bein`g` under the actionof aweak ,springal InY similar 'manner part 8 is provided with partsl 13which project from=part181nnder action of two springs.-

Parts; 13. fwillthere- 10 fore'seize the canvas `before the part Si-andL consequence of the rojectingfpart 14the 5"1 canvas will assume t epositionvsh'ownfin Fig. 4. -lfi r1- On part 8 continuing' itsforwardmove- 15 ment; it will force back part-s5141anditselfi pass thecanvas' which beingrhcldion'bo't'h sides by part 13 is .obligedtoacontrctfsoas -to assume the position showminffFig-15H `When .part 8recedes the canvasivvillre 2o mai-n. inthe 'position -accordinga-fto iFig, l'25 as' part v14 cannot?deformathelcanvas'its spring beingtooweak. The'partilztmay also be fitted with a lock'ing'device s'ahat itremains' in the position according to' Fig'. 5 while part 8 recedes.Itzisffobviou'sf'that by -the canvas changing"fromffthefpositionaccording to Fig. 4 to the':'p'osti'erfi accord-` ing to Fig. 5 it willbe consideral'ily 'shortcned in this place and ati-the'sides-'offthecore-ring the folds will disappea'r. "5"

' 40 articulated in the middle and their free ends are pressed underaction of springs 18' against the core. Qn the ends of these levers'`are fitted rollers 19 which roll in circular lines on the core. l It isevident that-cach lever roller will engage a given part lof lthe canvacorre-- spending to the path of the roller a its end and when thelowered lever-has cdhlpleted its operation, the canvas'will heolpletelytadhered and on rotationfbeing c'o'nti `i`e'd, .a

number of layers of cava'sxa 6 the',` verki- .hasbeeh cniplt'fvvhe'repon E they are returned into operative position when freshcanvas is to be placed on a new core.

. I claim: 1. In a machine for manufacturing pneui hav-ingfpjetas@ gers,and mea-11S. for @wenn matiqtires'consisting of a'drum; containing thecanvas band a brake adapted to contdl'the uiviiidii'g' of said drum, avwheel 4core, driven. b'y suitable gearing; ai `.plait reducing' deviceoffniiib'- W' 'otallyfarrnged'fonheither side of l core,

spring4- controlled "r6y CtiQl'lS" i were: maar Sad gers q' andv a'cementing dvic'efconsis'ting of i a? plurality *of spin0"cbntiolledpivotally" 105 mou'tedj'levers linksfcdilnecting -saidflevrs andVh'zivngy beifriiig" 'against the "cancil'nocatingv said levers-(in avertical-direc- 'from therhref l 4. A machine f l placingV and cementingcari-vas to th oreiring for making theoutglg covers' of pneumatic tiresconsistingilof I main body, a drum on which the canvas 115 wound,l ea",rotatable 'sh aft to .which` tlldre-,rng .lfe" i g'ahly..,ttedsailitsa I...Lafaspiaa un t 55519 a. aims:

and 4v"'eans 'flstcking he sides ofthefcanf. as to. the core, substandescribedg machine foiijiplacinggand 'sticlnng. ith'e baiivas t'othecore-'ring lf o'r .the o'tiildovers of pneumatic 'tires `ciis1sting 125of a main body, a drum on which the canvas band is wounda rotatableshaft to which the core-ring -is exchangeably fitted, a pressureattachment comprising spring conanother point of the top of core-ring,means causing the canvas to contract in at the sides, a system of leverspivoted at one end and carrying rollers at their other ends and arrangedatbothl sides of the core-ring, said levers being articulated in theirmiddle, springs for forcing the rollers at the ends of sald leversagainst the core-ring, and levers coupled with each otherby means ofconnecting rods, and means for oscillating said levers around theirpivots so' that the rollers describe arc circles on the 'core-ring.

6. A machine for placing and sticking the canvas to the core-ring formaking the outer covers of pneumatic tires consisting of a main body, adrum on which the canvas band is wound,'a rotatable shaft to which thecore-ring is excha'ngeably fitted, a pres-V sure attachment comprisingspring -actuated rollers, each roller'pressing against` another point ofthe top of the core-ring, means causing the canvas to contract in at thesides, a system of levers pivoted at one end and carrying rollers vattheir other ends and arranged at both sides of the core-ring, saidlevers being articulated in their middle, springs forcing the Vrollersat the ends of said levers against-the core-ring, said levers beingcoupled with each other by means of connecting rods, and means foroscillating said levers around their pivots, said levers being varrangedon a two-way adjustable slide.

7. The combination of a -machine as specified, of' a lrevoluble core tosustain the layer or strip, and meansA engaging both vsides of a-portionof the stripto flatten the same, substantially as described.

.8. The combination of a machine as speciied, of a revoluble coretosustain the vlayer or strip, and means. engaging both sides of themarginal portion of the strip to flatten the same, substantially asdescribed.

9. The combination of a machine as specified, of ya revoluble core forsustaining the layer or strip, and means engaging both sides of themargin of the strip to flatten the same, said means including co-actingyieldy layer or strip, and means retaining the marplurality of gin ofthe strip in spaced relation to the core and acting on such margin toflatten the same, substantially as and for the purposes set forth.

11. The combination of a machine as specilied, of a revoluble core tosustain the layer or strip, and means engaging both sides of the marginand holding the same in spa-ced relation from the core to fiat-ten thesame, substantially as described.

-12 The combination of a machine as specitied, of a revoluble core tosustain the layer or strip, means holding the margin of the strip inspacedv relation to the .core and flattening the same, and meanssubsequently adhering the flattened margins, substantially as and forthe purposes set forth.

13. The combination of a machine as specified, of a revoluble core tosustain the layer or strip, means engaging the tread portion andcomprising a plurality of elements spaced apart from each other andarranged in staggered relation to engage the tread at diii'erentpointswith respect to the center thereof, the tread engaging portions ofsaid. elements being of different contours corresponding to theirlocation on the tread, substantially as described.

14. A tire making machine comprising in combination, a revoluble corefor supportin the strip', and means for sticking the si es or margins ofthe strip and comprising a plurality of pivotally mounted swingingrolling elements arranged and disposed so that the range of'swi'ngmgmovement of one element will intersect the path of another of suolielements,substantially as sides or .margins of the strip comprising aVpivot-ally mounted swinging elements arranged and disposed so that therange ofswinging movement of one element will intersect the range ofmovement' of another of such elements, substantially as described.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

